Wallbox integration: is it possible to change phase setting (e.g. select 1-, 2-, or 3-phase charging)

Feature request for optimised solar-charging via Wallbox PulsarPlus charger:
Via Home Assistant, I’ve automated charging to follow the overcapacity from my PV panels, so that excess power is used to charge the car with my Wallbox Pulsar Plus. So input/output from the net is around 0. I do this by automatically altering the current.
A strange thing occurs, which gave me an idea: my E-Tron starts with 2 fase charging and 6A, delivering 2x230x6 = 2760W charging power. With the switch from 7A to 8A however, the wallbox switches from 2x230x7=3220W to 3x230x8=5520W (so from 2-phase to 3-phase). That’s a rather big step.
Q: is it possible to make a user-choice between 1-phase, 2-phase and 3-phase charging? That way it is possible to follow the excess power-curve more precisely, also for smaller PV-panel installations.